Questions tagged [inductive]
In the context of electronics, inductive refers to circuits that use magnetic fields, for things such as power or data transfer or sensing metal objects
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Eliminating a weird pulse when switching a valve actuator using a low-side MOSFET
The circuit is connected as drawn below:
MOSFET IC = MAX14919A
Valve actuator = MHE2-MS1H-3/2G-M7-K
Schottky Diode = SS16HL-TP
The pulse happens when the low-side MOSFET opens (disconnecting the ...
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Is it possible to "relay" a wireless (inductive) charger using two coils?
I'm on a quest to have an iPhone wallet case that supports wireless charging. I won't bore you with my long list of failures, but would love feedback on this strategy.
I 3d printed a case which puts a ...
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MOC3041 typical SSR circuit, when snubber is applied, triac never turns off
I am trying to make this circuit:
I got reference from this site, which is very useful, thanking them for info;
https://components101.com/ics/moc3041-zero-cross-triac-driven-optoisolator
Despite all ...
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Mixing power supplies with inductive loads
I have two unregulated power supply - 24V and 12V.
My board consists of digital components and sensors that require 3.3V or 5V.
All that electronics is resposible for electromagnets or DC brush motors ...
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Can wireless charging become more energy efficient?
I've stumbled upon a few articles saying that wireless charging takes more energy to charge something compared to the cable. Like this one.
Like in the test from the article, it takes 47.33 % more ...
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Do I need a snubber in a snubberless triac?
I am trying to make this circuit and using the Triac as a switch. I am using in this one a BTA06, although I will upgrade it to a BTA12 so it can handle 220 V 1000 W easily. It will be implemented in ...
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Can we replace transformer in the DAB converter with some inductor model [closed]
I am currently working on analyzing the behavior of GaN MOSFETs in a Dual Active Bridge (DAB) converter for a battery charging application. The DAB converter requires a transformer for isolation and ...
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Would a room-sized coil used for inductive coupling and wireless energy transfer be feasible?
My understanding of inductive coupling is that it isn't feasible over long distances because the spread of the magnetic field lines happens rapidly, so not much flux will go through the receiver coil ...
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Inductive crosstalk mechanism for 2 lines that run parallel on the same layer
According to Faraday's law, changing magnetic field lines that penetrates the victim line must create voltage on the victim line, but if we imagine, we see lines are orthogonal to the victim trace ...
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Why is the current limited to 0.8A while switching this inductive load?
How can I increase the current in this setup? I tried increasing the gate on pulse and the inductance (L) but couldn't achieve a higher current. Any other suggestion on this?
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Driving a solenoid via a digital output
What are the effects of the pull-down resistor (33K) when the solenoid-valve enters its turn-off phase? Will it prevent the solenoid-valve from ever discharging because current would flow from ground ...
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If the impedance of two coils is measured to be identical at 250.0 kHz, is it safe to assume identical impedance across the spectrum?
This question pertains to matching two air-gap inductors for use in resonant coupling. Alternative solutions are welcomed and appreciated.
The two coils shall be comprised of identical wire.
The two ...
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High side switch with inductive loads
Seeking help with the following datasheet. Section 9.4.3
Didn't understand the above calculations. It states that for inductive load energy dissipation, the energy from the source and the load is ...
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Low-side push-pull transistor of MOSFET gate driver damaged
I have a buck converter as shown in the given figure (48 V output):
At rated loads the buck converter operates correctly as expected. When I test the circuit with the over-current and the short-...
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Inductive proximity sensors: size vs. sensitivity
My target is a 20mm long, stainless steel, socket head, M3 screw with head facing the sensor. How will sensor sensitivity, i.e. maximum sensing distance, change with different sensor size? I'm looking ...
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I want to know if the following circuit is inductive or capacitive. What is the difference between inductive and capacitive?
I want to know if the following circuit is inductive or capacitive? What is the difference between inductive and capacitive?
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How to reduce noise on signal cable
I need to drive some 12V DC motors using an Arduino Nano Every board. The motors can require up to 6 Amps.
I managed to drive them using some opto-isolated relays, so there should be no problem on ...
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Can a contactor give an inductive kickback?
I have a ZBMINI (not -L) and use it to toggle my heating (2kW). In between I put a contactor because I trust it to be more safe. The problem is that sometimes it toggles a few times extra. Depending ...
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Is this caused by inductive kickback?
I have a remote controlled switch that's connected to a bathroom fan (220v AC, 50Hz). The switch turns the fan on without issues every time. However, when instructed to turn it off, it immediately ...
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Calculate or estimate 3-phase 400V heat pump (inductive) load
My water heating system (CTC) consist of a air-to-water heat pump and a water tank with an immersion heater. It is all powered from the same electronics pack and hooked up to 400V (3-phase) with a 25A ...
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MOSFET problem in H-Bridge circuit
I'm trying to switch the latching solenoid on and off with an H-bridge circuit (see figure).
Components I use in this circuit: P-MOS , N-MOS , NPN
I've run this circuit a few times with no problems, ...
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Stability simulation - breaking the loop for a MOSFET - op-amp current source
The task at hand is to create a voltage controlled current source of 60 mA driving a valve coil (64 mH, 139 Ω). I am aware the MOSFET used is insufficient powerwise; it was a quick attempt to have a ...
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Issue with liquid level sensing circuit with LDC0851 chip
I came across a video where TI demonstrates liquid level sensing via an inductive switch. I am trying to recreate this and understand the circuit they made. A forum provided this schematic:
Below I ...
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Magnetic charging
I have a question about magnetically charging devices and would like to see if anyone can help.
I understand we have things like cell phone chargers that wirelessly charge using inductive technology, ...
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How to drive an induction hob coil from AC mains
I have been looking into designing an induction hob circuit, but haven't really found complete answers to my questions.
As I understand it, it's important to take advantage of the natural resonant ...
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Ringing seen when charger is presented to DUT
The following is my setup:
Charger is set to 56V and 15A.
When charger is turned on there is significant ringing measured by the probe directly at the charger terminals. However this ringing is ...
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Best PCB relays for inductive loads
The questions:
What should I look for when searching for a PCB relay to drive inductive loads?
Any tips on how I could find relays like that (digikey, etc do not allow you to filter by snubber, ...
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Switching an active inductor controller with a high-side MOSFET [closed]
I need help switching an active inductor controller using inductive reactance to control the current of two feeds. The circuit I have built uses make-before-break switching just like a rotating brush ...
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Sizing a RC Snubber - microcontroller restarting when switching off an inductive load
I'm trying to drive an 220 V solenoid water valve with a relay, but I'm having problems: when I turn off the solenoid, the microcontroller reboots.
I believe the source of the problem is the spike ...
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Line to Line voltage in a three phase circuit with three loads
So the first load is a balanced, purely resistive one. The second one is unbalanced, and the third one is balanced. Diagram looks like this
For the first load, I'm expecting to get line to line ...
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Inductive load turns on PC mouse RGB
I have a floor fan connected on the same outlet as my PC. When the PC is off, if I turn on or turn off the fan the mouse RGB lights up for a split second. The mouse is plugged in to a USB port that ...
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PWM solid state relay output not well modulated with inductive load
I am attempting to control the current through a generator rotor by adjusting PWM input to a DC to DC solid state relay (SSR), specifically a TWTADE SSR-40DD.
The power supply for the output side of ...
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Inductive or capacitive load?
Here I have a series LCR circuit with resonant frequency greater than 200Hz. Is there a way to know whether this circuit is an inductive or a capacitive load?
Edit: The only additional information we ...
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How does balancing currents within a cable or conduit cancel its magnetic fields?
I know the NEC requires all current carrying conductors of the same circuit to be included in the same cable or conduit [300.3(B)], but why? I think it is because the magnetic field generated by ...
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How can the induced voltage be proportional to the frequency?
According to Faraday's Law, in coupled inductors, the magnitude of the induced voltage at the secondary coil is proportional to primary power source's frequency (V2 = w x I1 x M).
On the other hand, ...
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Why does the quality factor include 2*pi?
The quality factor is defined as the ratio of stored energy and dissipated energy (see below). The formula includes \$2\pi\$ as a constant coefficient. Why do we need \$2\pi\$ to calculate the stored ...
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Antenna inductance calculation (RFID applications, inductive coupling)
Inductance of various antenna coils of different shapes can be estimated. Some examples are:
A circular coil with single turn.
N turn multilayer circular coil.
Spiral coil.
N turn squae loop coil.
...
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Why inductive load heats up on modified sine wave inverter?
What makes the inductive load like a motor heat up when used on a modified sine wave inverter. Is it because of the back emf caused by sudden drop of voltage by the square wave?
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Can inductive sensors work on anodized aluminum?
I was wondering if an industrial-grade inductive sensor can detect an anodized aluminum plate. From what I know, based on the working principle of these sensors (basically the metal is detected by its ...
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Are SSR Relays suitable for inductive and capacitive loads?
I want to knowingly buy a cheap knockoff SSR Realy from some online sellers. The SSR Relay is advertised as not to be used for inductive or capacitive loads.
My application is switching on or off a ...
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Reading the RPM with a two pin car inductive sensor and an Arduino
I would like to read the RPM of an old car using my Arduino Nano.
The car has an inductive RPM sensor with two pins, located close to a cogwheel.
I am not very expert on this type of sensor. With the ...
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Does current flow from earth connected conductor in uniform electric field?
If we place a conductor inside of uniform external electric field then opposite charges will get induced on the both sides of conductor.
What if we connect two earth wire to each side, will continuous ...
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Triac driving motor with limit switch, needs protection?
I'm trying to drive a bunch of motorized ball valves from an ESP32.
These valves have a 230V AC motor with one common wire, and two wires to set direction (open/close). When powered between common and ...
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Generation of electrostatic induction
I need to generate a 500 volt electrostatic charge.
How can I do this?
I don't have a Van de Graaff generator.
What are some practical suggestions?
Basically I want to do an experiment in which I need ...
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TRIAC control of inductive load. Current ringing at higher power causes TRIAC to remain on
Here is the circuit I am using to control the motor. L2 is meant to represent the motor and C3 is the capacitor that comes with the motor. It is a single phase AC motor found here.
This circuit is ...
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Manchester and NRZ coding schemes
How does NRZ recover the clock? For example, Manchester coding is a self-time scheme, but we still need to have DLL or PLL for the recovery, it can be done without those CDR circuits? and back to NRZ, ...
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How to communicate short-distance (under sea) using induction?
I need a bite-throttle on my scuba-regulator to wirelessly control my foot-mounted thrusters, which are about 1.5meters distant from my transmitter. I need only "1 bit" (on or off) right ...
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MOSFET body diode and inductive load
I want to open a solenoid electromagnetic lock using an IRFR024NPbF MOSFET.
Datasheet: https://datasheet.lcsc.com/lcsc/1809062114_Infineon-Technologies-IRFR024NTRPBF_C2583.pdf
Generally speaking, I do ...
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Split core vs. ring ferrite
I have an Arduino clone with L298P motor driver, which drives a linear actuator with a brushed DC motor and a built-in end of stroke mechanical switches and diodes. Motor runs at about 12V/2A DC, on/...
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Uneven Brightness Curve When Using Digital Triac Dimmer on Neon Transformer
I am working on an AC dimmer project using the following circuit:
This circuit functions by detecting zero crossings in the AC power input via the LTV814 optocoupler connected to a pull-up input pin ...
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